def main(display):
'''Launch HotWheels.'''
spawn_interval = SPAWN_TIME_MAX_INTERVAL
dom = Dom(display)
user_car = Car(USER_CAR_TYPE, dom)
dom.add_car(user_car)
frames_elapsed = 0
total_frames = 0
score = 0
curr_level_score = 10
restart = False
crashed = False
while not crashed:
for event in pygame.event.get():
if event.type == pygame.QUIT:
return restart
# Move left or right. The car should not go outside the boundaries.
if event.type == pygame.KEYDOWN:
if (event.key == pygame.K_LEFT
and user_car.is_car_on_right_lane()):
user_car.switch_lane_to_left()
if (event.key == pygame.K_RIGHT
and user_car.is_car_on_left_lane()):
user_car.switch_lane_to_right()
if not frames_elapsed:
bot_car = Car(BOT_CAR_TYPE, dom)
dom.add_car(bot_car)
for car_name, car in dom.cars.items():
if car.car_type == BOT_CAR_TYPE:
try:
if not car.is_collision(user_car):
car.move()
else:
dom.render_crash_message(score)
pygame.display.update()
restart = crashed = True
time.sleep(2)
break
except CarOutOfBoundsException:
score += curr_level_score
dom.remove_car(car)
if crashed:
return restart
dom.render_dom()
pygame.display.update()
clock.tick(GAME_FPS)
frames_elapsed += 1
if frames_elapsed == spawn_interval:
total_frames += frames_elapsed
if total_frames >= LEVEL_UP_INTERVAL:
curr_level_score *= 2
spawn_interval = max(SPAWN_TIME_MIN_INTERVAL,
spawn_interval - SPAWN_TIME_DECREMENT)
total_frames = 0
frames_elapsed = 0
return restart
